rrcc/src/Token.h
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Add shift offset support via <
2021-08-03 02:31:51 +02:00

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/*****************************************************************************
* Copyright (c) 2020, rrcc FM10K-Documentation Contributors
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
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* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
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* may be used to endorse or promote products derived from this software
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*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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*****************************************************************************/
#pragma once
#include <stdexcept>
#include <string>
#include <utility>
#include <vector>
class Token {
public:
enum class Type {
// (LocalLabel:) Operator(.Flags) (RegisterLabel,RegisterLocation,CodeLabel,CodeLocation,Immediate)
Directive,
BareValue,
Label, // {label}: can't start with a number. Can contain a-zA-Z0-9_. Example: label:
LocalLabel, // .{label}
Operator, // Operator string. Can contain {a-zA-Z0-9_~}
RegisterLocation, // %{32-bit unsigned integer} , example: %0, %1234, %0x1234
CodeLabel, // @{label} or @{.label}, example: @__test, @.loop
CodeLocation, // @{32-bit unsigned integer} , example: @0, @1234, @0x1234
Immediate, // {32-bit unsigned integer} , example: 0, 1234, 0x1234
Offset, // {+-<}{32-bit unsigned integer}, will apply to previous value
AsValue, // &
AsIndirect, // *
// A comment is ;{....} anything that starts with ; . Reads until \n
//End of Token: \n\t[space],;
};
Token(const Token &) = default;
Token(Type type, std::string valueString, uint32_t valueImmediate = 0) : type(type), valueImmediate(valueImmediate),
valueString(std::move(valueString)) {
}
Type type;
uint32_t valueImmediate;
std::string valueString;
Type getType() const {
return type;
}
const std::string &getTextValue() const {
return valueString;
}
uint32_t getNumericValue() const {
return valueImmediate;
}
};